This is a common opinion, but I do not believe it can stand the scriptural test for several reasons.
Interesting. But your answers seem to be missing something.
1. If the covenant were formed with Abraham’s natural seed, then all of Abraham’s natural seed would be party to it. The covenant was made not with Israel, but with Abraham, and yet there were many natural sons of Abraham which were strangers from the covenant of promise
Yes, all of Abraham's natural seed in obedience to the Abrahamic Covenant as they obey YHWH - the covenant LORD God of Israel. This would preclude the seeds of Ishmael and later Esau
by their own actions. And these natural sons of Abraham are strangers from the covenant of promise for either the land of Canaan or the promised Blessing on all nations from the Offspring because they are not partakers in the obligations of the Abrahamic covenant proper.
To any and all Muslims we would preach that it is not enough to circumcise male infants, one needs to also follow after the true YHWH - covenant LORD God of Israel throughout all of redemptive-history. Repent and believe in Christ.
2. Likewise it would imply none could be members of the covenant besides the natural seed of Abraham, which again is disproven by many counter-examples e.g. Uriah the Hittite.
Well, that was true enough until the Sinaitic covenant which then permitted Hittites, and any other "-ites" to become members of the covenant community.
NOTE: Before Sinai, all other non-Abrahamic individuals God can in His good pleasure may save or not save in a way that is not normative to the covenant (possibly Abimelech etc)
. We read nothing in scripture about this third covenant which is neither the covenant of works nor the covenant of grace, whenever it is addressed we see two seeds (
Gen. 3), two humanities (
Rom. 5) or two covenants (
Gal. 4) but not three;
What third covenant? There is the Covenant of Works and Covenant of Grace. (But here I may be different than Adams? I honestly don't know)
The implication is not that obedience was the basis of their covenant but that they possessed the law, the purpose of which is to be a tutor unto Christ and to bring the knowledge of sin, but not to make men righteous.
Now in dealing with this, we need to differentiate between the Covenant as being obeyed in flesh or spirit. In flesh as to a Covenant of Works, it will be to nothing. Circumcise every male infant you have, it is to nothing unto salvation. Only in obedience of faith in God that gives new life to the worshipper does the act give sanctifying grace by the only Mediator from eternity - Christ Jesus.
In the days of Sinai, make sacrifice as to a work that saves you, it is as to nothing. Moses says directly it is a matter of the heart (Deut. 30:16-17) and the writer of Hebrews affirms that the blood of bulls and goats could only purify the flesh ceremonially but could not save.
5. The earthly promises and blessings of the old covenant were
only intended to lead the Israelites toward Christ and the greater fulfillment to come, having no end in themselves (
Heb. 11:10)
Only? Is that what Hebrews says there? As in a precluding of the parallel promises of land and victory over other nations (Ex. 23:22; 27-31; Deut. 28:9; Lev. 26:3-8; et al)? Genuinely asking. I am not presuming anything of you or your position.
6. God will not suffer any unclean thing to enter His presence, and those who are under the law are bound to keep every part of it. It does not accord with His holiness to only judge sinners temporally and not eternally. If they are judged for their own merits, they must perish eternally, if they are judged on Christ’s merits, they will suffer no punishment at all. Likewise, if one keeps the whole law he merits not land but eternal life.
I am unsure how you suppose it logically follows from our position that we believe this?